kyverno/charts/kyverno-policies/templates/default/disallow-selinux.yaml

{{- $name := "disallow-selinux" }}
{{- if eq (include "kyverno-policies.podSecurityBaseline" (merge (dict "name" $name) .)) "true" }}
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: {{ $name }}
  annotations:
    policies.kyverno.io/title: Disallow SELinux
    policies.kyverno.io/category: Pod Security Standards (Default)
    {{- if .Values.podSecuritySeverity }}
    policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
    {{- end }}
    policies.kyverno.io/description: >-
      SELinux options can be used to escalate privileges and should not be allowed.
  labels: {{ include "kyverno-policies.labels" . | nindent 4 }}
    app: kyverno
spec:
  validationFailureAction: {{ .Values.validationFailureAction }}
  background: true
  rules:
  - name: seLinux
    match:
      resources:
        kinds:
        - Pod
    validate:
      message: >-
        Setting custom SELinux options is disallowed. The fields
        spec.securityContext.seLinuxOptions, spec.containers[*].securityContext.seLinuxOptions,
        and spec.initContainers[*].securityContext.seLinuxOptions must be empty.
      pattern:
        spec:
          =(securityContext):
            X(seLinuxOptions): "null"
          =(initContainers):
          - =(securityContext):
              X(seLinuxOptions): "null"
          containers:
          - =(securityContext):
              X(seLinuxOptions): "null"
{{- end -}}